423042101 has 4 divisors (see below), whose sum is σ = 423854604. Its totient is φ = 422229600.

The previous prime is 423042091. The next prime is 423042121. The reversal of 423042101 is 101240324.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 264030001 + 159012100 = 16249^2 + 12610^2 .

It is a cyclic number.

It is not a de Polignac number, because 423042101 - 2¹⁰ = 423041077 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 423042101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423042121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 405470 + ... + 406511.

It is an arithmetic number, because the mean of its divisors is an integer number (105963651).

Almost surely, 2^423042101 is an apocalyptic number.

It is an amenable number.

423042101 is a deficient number, since it is larger than the sum of its proper divisors (812503).

423042101 is an equidigital number, since it uses as much as digits as its factorization.

423042101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812502.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 423042101 is about 20567.9872860715. The cubic root of 423042101 is about 750.6909786100.

Adding to 423042101 its reverse (101240324), we get a palindrome (524282425).

The spelling of 423042101 in words is "four hundred twenty-three million, forty-two thousand, one hundred one".